Nuclear energy in power plants is created via ________
A) ionic transformation of atoms
B) bombarding radioactive elements with electrons
C) extraction of energy from the nucleus of cells
D) fissioning uranium atoms by bombarding them with neutrons
E) fusion of electrons
D
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What can be said about drinking water that is 99.9999% free of some poison, such as a pesticide?
A. The ratio of water molecules to pesticide molecules in the glass is so great that drinking the water is not problematic. B. In each 10,000 parts of the contaminated water, there is one part pesticide and 9999 parts pure water. C. The water is highly contaminated and surely not fit to drink. D. In each 100,000 parts of the contaminated water, there is one part pesticide and 99,999 parts pure water.
The IUCN's Red List is ________
A) an identification list of known species B) a scorecard of international failures at conservation C) an updated list of species facing unusually high risk of extinction D) a list of ecologically harmful invasive species E) a list of unidentified species
China and the United States, combined, use what percentage of the world's energy?
A. 4% B. 12% C. 39% D. 59% E. 84%
Which of these underlying causes is responsible for the churning of the Earth's insides that ultimately drives plate tectonics?